Add pyodide-interrupt package (#852)

docs/changelog.md

@@ -27,6 +27,9 @@
 - Drop support for serving .wasm files with incorrect mime type.
 - Replace C lz4 implementation with (upstream) javascript implementation.
   [#851](https://github.com/iodide-project/pyodide/pull/851)
+- New package
+  [pyodide-interrupt](https://pypi.org/project/pyodide-interrupts/), useful for
+  handling interrupts in Pyodide (see project descripion for details).
 
 ## Version 0.15.0
 *May 19, 2020*

packages/pyodide-interrupts/meta.yaml

@@ -0,0 +1,11 @@
+package:
+  name: pyodide-interrupts
+  version: 0.1.1
+
+source:
+  url: https://files.pythonhosted.org/packages/b1/c2/918c52e47bf91570d9883a1c761c4d78a59cf4d1d8f8c67c25a4e164ff87/pyodide-interrupts-0.1.1.tar.gz
+  sha256: b85bc38b92cd5c35dd1a5192a71495abe4cd57eadccfacbc0421fb44fb6c9e74
+
+test:
+  imports:
+    - pyodide_interrupts

packages/pyodide-interrupts/test_pyodide_interrupts.py

@@ -0,0 +1,17 @@
+def test_pyodide_interrupts(selenium):
+    selenium.load_package("pyodide-interrupts")
+    selenium.run("from pyodide_interrupts import check_interrupts")
+    assert (
+        selenium.run(
+            "x = 0\n"
+            "def callback():\n"
+            "    global x\n"
+            "    print('check')\n"
+            "    x += 1\n"
+            "with check_interrupts(callback, 10):\n"
+            "    for i in range(50):\n"
+            "        print(i, end=',')\n"
+            "x"
+        )
+        == 11
+    )